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The FAST Discovery of an Eclipsing Binary Millisecond Pulsar in the Globular Cluster M92 (NGC?6341)
Pan,Zhichen1,2; Ransom,Scott M.3; Lorimer,Duncan R.4,5; Fiore,William C.4,5; Qian,Lei1,2; Wang,Lin1,2,6,7; Stappers,Benjamin W.7; Hobbs,George8; Zhu,Weiwei1,2; Yue,Youling1,2; Wang,Pei1,2; Lu,Jiguang1,2; Liu,Kuo1,2,9; Peng,Bo1,2; Zhang,Lei1,6,8; Li,Di1,2,6
2020-03-19
Source PublicationThe Astrophysical Journal Letters
ISSN2041-8205
Volume892Issue:1
AbstractAbstract We report the discovery of an eclipsing binary millisecond pulsar in the globular cluster M92 (NGC?6341) with the Five-hundred-meter Aperture Spherical radio Telescope (FAST). PSR?J1717+4308A, or M92A, has a pulse frequency of 316.5 Hz (3.16 ms) and a dispersion measure of 35.45 pc cm?3. The pulsar is a member of a binary system with an orbital period of 0.20 days around a low-mass companion that has a median mass of ~0.18 M⊙. From observations so far, at least two eclipsing events have been observed in each orbit. The longer one lasted for ~5000 s in the orbital phase range 0.1–0.5. The other lasted for ~500 s and occurred between 1000 and 2000 s before or after the longer eclipsing event. The lengths of these two eclipsing events also change. These properties suggest that J1717+4308A is a “red-back” system with a low-mass main-sequence or sub-giant companion. Timing observations of the pulsar and further searches of the data for additional pulsars are ongoing.
KeywordGlobular star clusters Binary pulsars Eclipsing binary stars Millisecond pulsars Pulsar timing method
DOI10.3847/2041-8213/ab799d
Language英语
WOS IDIOP:2041-8205-892-1-ab799d
PublisherThe American Astronomical Society
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Document Type期刊论文
Identifierhttp://ir.bao.ac.cn/handle/114a11/64488
Collection中国科学院国家天文台
Affiliation1.National Astronomical Observatories, Chinese Academy of Sciences, 20A Datun Road, Chaoyang District, Beijing 100101, People's Republic of China panzc@bao.ac.cn, dili@nao.cas.cn
2.CAS Key Laboratory of FAST, National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100101, People's Republic of China
3.National Radio Astronomy Observatory, Charlottesville, VA 22903, USA
4.Department of Physics and Astronomy, West Virginia University, Morgantown, WV 26506, USA
5.Center for Gravitational Waves and Cosmology, West Virginia University, Chestnut Ridge Research Building, Morgantown, WV 26505, USA
6.College of Astronomy and Space Sciences, University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China
7.Jodrell Bank Centre for Astrophysics, Department of Physics and Astronomy, The University of Manchester, Manchester M13 9PL, UK
8.CSIRO Astronomy and Space Science, P.O. Box 76, Epping, NSW 1710, Australia
9.Max-Plank-Institut für Radioastronomie, Auf dem Hügel 69, D-53121 Bonn, Germany
First Author AffilicationNational Astronomical Observatories, Chinese Academy of Sciences
Recommended Citation
GB/T 7714
Pan,Zhichen,Ransom,Scott M.,Lorimer,Duncan R.,et al. The FAST Discovery of an Eclipsing Binary Millisecond Pulsar in the Globular Cluster M92 (NGC?6341)[J]. The Astrophysical Journal Letters,2020,892(1).
APA Pan,Zhichen.,Ransom,Scott M..,Lorimer,Duncan R..,Fiore,William C..,Qian,Lei.,...&Li,Di.(2020).The FAST Discovery of an Eclipsing Binary Millisecond Pulsar in the Globular Cluster M92 (NGC?6341).The Astrophysical Journal Letters,892(1).
MLA Pan,Zhichen,et al."The FAST Discovery of an Eclipsing Binary Millisecond Pulsar in the Globular Cluster M92 (NGC?6341)".The Astrophysical Journal Letters 892.1(2020).
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